Finding the Fourth Proportional to 815,485.14, 1,223,269.97 and 208,279.17
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Solution
The fourth proportional to 815,485.14, 1,223,269.97 and 208,279.17 is: 312,429.55
Step by Step Solution
- Step 1: Write the proportion equation
815,485.14 : 1,223,269.97 = 208,279.17 : x - Step 2: Convert to fraction form
815,485.14/1,223,269.97 = 208,279.17/x - Step 3: Cross multiply
815,485.14x = 1,223,269.97 × 208,279.17 - Step 4: Simplify right side
815,485.14x = 254,781,652,996.13 - Step 5: Solve for x
x = 254,781,652,996.13/815,485.14 - Step 6: Final answer
x = 312,429.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.